基于配电变压器分布信息的配电线路两级保护优化配置方法研究  

Research on hierarchical protection confguration of distribution line switch

作　　者：郭亮 周求宽 李升健 徐在德 赵立强 边贺斌 GUO Liang;ZHOU Qiukuan;LI Shengjian;XU Zaide;ZHAO Liqiang;BIAN Hebin(State Grid Jiangxi Electric Power Co.,Ltd.Electric Power Research Institute,Nanchang 330096,China;Taihao Software Co.,Ltd.,Nanchang 330096,China;Beijing Zhongheng Bori Digital Electronic Technology Co.,Ltd.,Beijing 100085,China)

机构地区：[1]国网江西省电力有限公司电力科学研究院,江西南昌330096 [2]泰豪软件股份有限公司,江西南昌330096 [3]北京中恒博瑞数字电子科技有限公司,北京100085

出　　处：《电气应用》2020年第4期38-48,共11页Electrotechnical Application

基　　金：国网江西省电力有限公司科技项目“配网线路开关分级保护配置辅助决策方法及平台研究与应用”(52182017001B)。

摘　　要：为进一步缩小配电线路两级保护配置方案的故障停电范围,根据配电线路供电可靠性本质,提出一种基于停电配电变压器容量最小化优化方案,建立了预期故障停电总容量的目标函数。提出一种目标函数可行的计算方法,将难以求解的无限问题转化为简单易行的有限离散问题,再通过遍历比较获得最优解及其对应的两级保护配置方案。基于此,根据配电线路特点编制计算机自动求解算法,通过软件编程实现了配电线路的显示及两级保护优化配置自动计算。通过对计算机软件运行结果的人工核算,证明了该方法的正确性及软件算法编程的快速性。In order to further reduce the fault outage scope of two-stage protection configuration scheme for distribution lines,according to the nature of power supply reliability of distribution lines,an optimization scheme based on minimizing the capacity of distribution transformer during power outage is proposed,and the objective function of the expected total capacity of distribution transformer during power outage is established.A feasible calculation method of the objective function is proposed,which transform the infnite problem diffcult to solve into a simple fnite discrete problem.The optimal solution and its corresponding two-stage protection confguration scheme are obtained by traversing and comparing.Based on this,according to the characteristics of distribution lines,a computer automatic solution algorithm is developed,and the displaying of distribution lines and the automatic calculation of optimal configuration of two-stage protection are realized by software programming.Through the manual calculation of the results of computer software operation,the correctness of this method and the rapidity of software algorithm programming are proved.

关 键 词：配电线路 两级保护配置 预期故障停电总容量 保护配置优化 计算机编程 

分 类 号：TM75[电气工程—电力系统及自动化] TM421